package com.atguigu.yygh.oss.service.impl;

import com.aliyun.oss.OSS;
import com.aliyun.oss.OSSClientBuilder;
import com.atguigu.yygh.oss.service.FileService;
import com.atguigu.yygh.oss.utils.ConstantOssPropertiesUtils;
import org.joda.time.DateTime;
import org.springframework.stereotype.Service;
import org.springframework.web.multipart.MultipartFile;

import java.io.IOException;
import java.io.InputStream;
import java.util.UUID;

/**
 * @ClassName FileServiceImpl
 * @Description 此类描述:
 * @Author dangchen
 * @DateTime 2022-10-18 18:58
 * @Version 1.0
 */
//参考SDK中的：Java->上传文件->简单上传->流式上传->上传文件流
@Service
public class FileServiceImpl implements FileService {
    @Override
    public String upload(MultipartFile file) {
        String endPoint = ConstantOssPropertiesUtils.END_POINT;
        String accessKeyId = ConstantOssPropertiesUtils.ACCESS_KEY_ID;
        String accessKeySecret = ConstantOssPropertiesUtils.ACCESS_KEY_SECRET;
        String bucketName = ConstantOssPropertiesUtils.BUCKET_NAME;

        try {
            //创建OSSClient实例
            OSS ossClient = new OSSClientBuilder().build(endPoint, accessKeyId, accessKeySecret);
            //上传文件流
            InputStream inputStream = file.getInputStream();
            String filename = file.getOriginalFilename();
            //生成随机唯一值，使用uuid，添加到文件名称里面
            String uuid = UUID.randomUUID().toString().replaceAll("-", "");
            filename = uuid + filename;
            //按照当前日期，创建文件夹，上传到创建文件夹里面
            //  2021/02/02/01.jpg
            String timeUrl = new DateTime().toString("yyyy/MM/dd");
            filename = timeUrl + "/" + filename;
            //调用方法实现上传
            ossClient.putObject(bucketName,filename,inputStream);
            // 关闭OSSClient
            ossClient.shutdown();
            //上传之后文件路径
            // https://yygh-atguigu.oss-cn-beijing.aliyuncs.com/01.jpg
            String url = "https://" + bucketName + "." + endPoint + "/" + filename;
            //返回
            return url;
        } catch (IOException e) {
            e.printStackTrace();
            return null;
        }
    }
}
